I have owned Verity Audio Parsifal Ovations for 14 years powered by a Luxman L-509u integrated amp - which is 120W into 8 ohms and doubling to 240W into 4 ohms with a damping factor of 370. It is a wonderful amp/speaker combination.
I am not familiar with the Plinius Hautonga, but it produces 200W into 8 ohms and 280W into 4 ohms. The damping factor is not however mentioned on the manufacturer's specs.
The question is does this amp have enough oomph to power speakers with a sensitivity of 89 dB and a minimum impedance of 4 ohms? Probably...